硬性透气性接触镜在儿童屈光不正的应用

从上世纪70年代开始,随着硬性透气性接触镜材料的出现,硬性透气性角膜接触镜(rigid gas permeable contact lens,RGP)逐渐应用于临床[1].由于其良好的光学特性及安全性,近年来选择性地应用于儿童屈光异常的矫正.

超长期配戴聚甲基丙烯酸甲酯角膜接触镜一例

近年来的研究表明,配戴角膜接触镜可影响角膜厚度、形态及功能[1-6].我国在20世纪60年代中期开始了聚甲基丙烯酸甲酯(polymethylmethacrylate, PMMA)角膜接触镜的验配,尽管现在已经被软性角膜接触镜及透氧性硬性角膜接触镜(rigid gas permeable contact lens, RGP)所取代,但目前一部分人群仍在继续使用原PMMA镜片.对于超长期配戴PMMA角膜接触镜对角膜的综合影响尚缺乏报道.

OK镜治疗近视眼200例近期疗效观察

OK镜即角膜矫形接触镜(orthokeratoloyg contact lens)是高度透氧、具有矫正和治疗功能的硬性接触镜片.OK镜通过塑形眼角膜,增大曲率半径,减少角膜屈折力,降低近视屈光度而提高远视力.本文对我所OK镜治疗的200例近视眼进行了近期疗效观察.

配戴RGPCL隐形眼镜的疗效观察

RGPCL(regid gas Permeable contact lens)是一种硬式高透氧隐形眼镜,由于它透氧性高,安全舒适,配戴方便,可矫正各种类型的屈光不正,故倍受眼科医生的推崇.在日本和美国戴RGPCL者占隐形眼镜配戴者的40%和15%[1],国内北京同仁医院谢培英等利用RGPCL矫治了101例圆锥角膜[2],我院眼科视光中心开展RGPCL的配戴工作近年来共矫治了51例91眼,疗效满意,现介绍如下:

后房型有晶状体眼人工晶状体的临床应用

随着屈光不正特别是近视眼发病率的逐年提高,屈光手术方式多种多样,虽然目前仍以准分子激光原位角膜磨镶术(LASIK)为主导方式角膜屈光手术为主,但角膜屈光手术改变了角膜的生物力学形态[1].增加了术后角膜病变的危险性,并有矫治屈光度数范围小、易回退、术后视觉质量差等[2]问题.

Purpose:To investigate the efficacy of a soft bandage contact lens in the management of early bleb leak following tra-beculectomy. Methods: Between October 2011 and April 2013, 11 patients with early bleb leak following fornix-based trabeculectomy were instructed to wear a soft bandage contact lens 14 mm in diameter continuously for 1-2 weeks. The daily visual acuity, intraocular pressure (IOP), anterior chamber situation, and healing condition were measured at 1, 3, and 7 d, after con tact lens removal,.and 3 months after trabeculectomy..The con-ditions of blebs,.sensation of wearing contact lens,.and ad-verse events were recorded. Results:.Bleb leaks were observed at 2-8 d after surgery, (4.09±1.10 d on average). The daily LogMAR visual acuity did not significantly differ before and after contact lens wear (P>0.05). The IOP was significantly raised after at 1, 3, and 7 d after lens wear. (all P<0.05).The IOP at 3 months after lens wear did not significantly differ from that measured at lens removal (t=1.191, P=0.089). At 1 d after lens wear, 6 cases had deeper anterior chambers..All patients presented with a significantly deepened anterior chamber at 3 d after lens wear,.and were restored to the preoperative conditions..The bleb leakage was successfully treated at 7 d after lens removal in 10 patients, while 1 patient had to wear the contact lens for another 7 d for full healing of the bleb leak. No ocular infec-tion was noted throughout the management. Conclusion: A soft bandage contact lens of 14 mm diameter is a safe and efficacious therapy for an early bleb leak fol-lowing fornix-based trabeculectomy.

透气性硬性角膜接触镜(RGPCL)矫治屈光不正的临床观察

角膜接触镜矫正屈光不正是安全而有效的,它包括有软性角膜接触镜(Soft Contact Lens,SCL)和透气性硬性角膜接触镜(Rigid Gas Permeable Contact Lens,RGPCL).我国主要以配戴SCL为主,占总配戴人数的99%,但由于RGPCL材料具有良好的透气性能及独特的光学性能,与SCL相比,其有着不可比拟的优点,故越来越受医生的推崇[1,2].为确认其疗效,现对2000年以来在我中心进行RGPCL验配的23例45眼屈光不正患者进行定期的随访观察.

ICL人工晶体植入术矫正高度近视

有晶体眼后房型人工晶体植入术（implantable contact lens,ICL）是一种放置在眼球后房内虹膜后面晶状体之前固定在睫状沟的屈光性晶状体，主要由Ⅵ型胶原制成，具有良好的组织相容性，且机械强度高、亲水性及光学性能好。ICL以其良好的可预测性、矫正范围广及保留眼睛原有调节力等优点，在眼屈光手术中扮演着十分重要的角色。有晶体眼后房型人工晶体符合理想屈光手术的多种特点，已成为矫正屈光不正的主要方法之一，在矫治高度近视、远视等方面具有独特的优越性。本文就ICL的优势及其局限性、并发症作一阐述。